I mix 1/3 pre washed canna coco. I take out 1/3 of the promix. Everything else is the same. To make it easy I mix 3 kits at a time. I buy 2 bales of promix and mix it with 3 bags of coco. I have been doing this exclusively for 2 years.
Ummmm....I'm confused....
If you replace 1/3 of the PM with coco, you have a 2:1 ratio of PM to coco. If you mix 2 bales of PM with 3 bags of coco, isn't the ratio now 2:3 PM to coco, or is the coco coming in different sized bags so the 2 bales plus 3 bags gives the 2:1 ratio???